Portable plural-stage crushing, screening, and washing plant



PORTABLE PLURAL- STAGE CRUSHING, SCREENING; AND WASHING PLANT Filed Sept. 21, 1949 April 1952 H. J. SHELTON, JR

7 Sheets-Sheet 1 INVENTOR HARRY J. SHELTON,JR.

BY WW4 ATTORNEY April 15, 1952 H. J. SHELTON, JR ,5 3,3 3

PORTABLE PLURAL-STAGE CRUSHING; SCREENING, AND WASHING PLANT Filed Sept. 21, 1948 7 Sheets-Sheet 2 FIG. 1A.

INVENTOR HARRY J; SHELTON,'JR.

ATTORNEY April 1952 H. J. SHELTON, JR 2,593,353

PORTABLE PLURAL-STAGE CRUSHING; SCREENING, AND WASHING PLANT Filed Sept. 21, 1949 7 Sheets-Sheet 3 ATTORNEY April 5, 1952 H. J. SHELTON, JR 2,593,353

PORTABLE PLURAL-STAGE CRUSHING, SCREENING, AND WASHING PLANT Filed Sept. 21, 1949 7 Sheets-Sheet 4 ll llllllllllllllillllllllumh INVENTOR HARRY J. SHELTON, JR.

ATTORNEY A ril 15, 1952 H. J. SHELTON, JR ,5

PORTABLE PLURAL-STAGE CRUSHING, SCREENING, AND WASHING PLANT 7 Sheets-Sheet 5 Filed Sept. 21, 1949 FIG.

INVENTOR HARRY J. SHELTON,JR. BY

ATTORNEY April 15, 1952 H. J. SHELTON, JR 2,593,353

SCREENING, AND WASHING PLANT PORTABLE PLURAL-STAGE CRUSHING,

7 Sheecs-Sheet 6 Filed Sept. 21, 1949 INVENTOR HARRY J. SHELTON. JR?

ATTORNEY April 15, 1952 H. J. SHELTON, JR

PORTABLE PLURAL-STAGE CRUSHING, SCREENING, AND WASHING PLANT 7 Sheets-Sheet 7 Filed Sept. 21, 1949 INVENTOR. HARRY J. Swen-on, JR.

ATTORNEY view' t esr z l iatentecl Apr. 15, 1952 PORTABLE PLURAL-STAGE onUsHmG,

SCREENING, AND WASHING PLANT Harry J. Shelton, Jr., Ladue, Mo., assignor to Gruendler Crusher and Pulverizer 0.0., St. Louis, Mo., a corporation of. Missouri,

Application September 21, SerialN 116;$9.

This invention relates in general to a certain new and improved apparatus and method for crushing rock, gravel and the like" and grading the crushed material.

It is a primary object of the present invention to provide a crushing plant which is adapted for facile transportability and integrally incorporates a jaw-crusher and airoll crusher.

It is a further object of the present invention to provide a portable crushing plant having a multi-tiered grading assembly provided with spray means for cleansing material graded therebr- It is an additional object of the present inyention to provide a portable crushing plant containing, means for collecting sand and other fine material in either a relatiyelydry or wet state as desired.

It isa further object? of the present invention to provide a portable crushing plant having means for conveying material too great in size for desired grading to a roll crusher; with the in sizefor reception into themachine, and-recrushing of material of'objectionable size for separating'intovarious grades.

With theabove and other objects in view, my invention resides in the novel features of form, construction, arrangement, and combination of parts presently describedand pointed'cut in the claims.

In the accompanying drawings ("six sheets)- Figures 1, 1A, and 1B conjunctively constitute a side elevational' view of a portable crushing plant constructed in accordance with and embodying thepresent invention;

F'lg'ure z is a transverse sectional view taken aleng line-22 of'Fi'gure 1;

Figure: 3 is a 'transversesectional View taken along line. 355 01 Figurez;

Figure. 4; is an enlarged iragnrental" sectional Figure 5 is a transverse sectional view taken along line 5-5 of Figure i;

Figures 6, 'Land 8 are transverse sectional views taken along lines 66, and 88,'re-

spectively, of Figure 1A;

2 Claims. (Cl. 241-101) 2 Figure 10' is a transverse sectional view taken along line Hie-1'0 of Figures 1A and 1B;

Figures 11 and 12 are transverse sectional. views taken along'lines Il-l I and l 2 -l-2; respectively, of Figure 1B;

Figure 13 is a transverse sectional view taken along line l3-l3 ofFigure 11; Y r l Figures 14 and 15 are transverse sectional views taken along lines I l-M andjl 5.-'-l.5 respectively,ofFigure 13; and a Figure 16 is a longitudinal sectional view of the portable-crushing plant.

Referring now by reference characters to the drawings which illustrate the preferred embodiment "of the present invention, A designates a crusher plant suitably mounted u-pon. amain frame l which is supported on wheel'sZfor facile transportation of the plant A. Swingably mounted spacedl-y upon the underside of the 20 main frame I is a plurality ofjacksi for supstructure," generally designated, 4, comprising a plurality of uprights 5 and struts-6 for supporting afeed unit 1 Said unitl is integrallyprovided' with a hopper 8 through which raw material, such as rocksand gravel, may: be dumped onto a power-driven classifying coarsescreen conveyor or so-called traveling grizzly 9' consisting of spaced linkmembers l O arranged in: the

, formation ofan endless belt H. Depending upon the particular resultant material desired; grizzli'es' having the requisite openings maybe "employed for assuring that" the material passing therethrough does not exceedthe maximum size desired. Rigidly=mounted beneath the upper run of thetraveling grizzly 9 is a deflectorb'afiie 1) having a cross-sectional shaperesembling an inverted V and acting as ashed overthe lower or return run of the traveling g'rizzlyt. *Thiisthe'materialpassingthroug'h the grizzly-:9 falls onto the name 1;. and, i defleeted intqachute l-z wh h in- Ie t q m mbe f m ue lir spaced rollers 14 bearinged' ior rotation in longitudinally extending parallel plates715-welded or otherwise secured to the underia'ce cffthetmain frame I, (see Figure 2). Material failing-to pass through the grizzly 9) is, carried forwardly and discharged into an adjustable Jaw crusher B preferably of the type forming the subject inatter of my pending application, Serial No; $38,375, filed March 31,, 1947; which matured into'Patent No; 2,532,678 011 December 5, Nla-teifialvso ground by the jaw crusher B is discharged onto the conveyor belt [3 and carried forwardly thereby, intermingled with the material originally passing through the grizzly 9, for ultimate delivery into a revolving drum-type conveyor or elevator it having a plurality of angularly disposed partitions for forming material-carrying pockets IS. The material received by the revolving elevator I5 is thus lifted and discharged upon a forwardly moving conveyor belt 2| there being provided a plate l9 suitably mounted, adjacent the upper portion of the elevator 16, upon support frames 20, for assuring that all material so discharged will fall into a power-driven conveyor, such as the belt 2|. Said belt 2|, at its forward end dumps the material upon the upper deck or screen 22 of a vibrating assembly unit S having an intermediate and a lower deck 23, 24, respectively.

The size of the meshes in said decks 22, '23, 24, being of respectively increased fineness, in the order named, to provide the various resultant grades of material and are inclined lengthwise to cause the material restrained thereon to travel towards their lower-most or rearward ends.

The material discharged from the belt 2| into the screen assembly S is subjected to washing by water sprayed downwardly thereon from a plurality of transversely extending spray pipes 25 connected to a longitudinally extending manifold 26 suitably mounted upon the screen assembly S and provided with appropriate fittings and pipes (not shown) for connection to a source of water.

Provided for vibrationally actuating the screen assembly S is an auxiliary power unit 2'! mounted upon the forward portion of a platform 28 suitably supported by frame members 29 and connected to railings 30 for permitting inspection of the working parts of the vibrator assembly S in accordance with usual practice.-

- erally designated as 36, disposed laterally from the screen assembly S (see Figures 11 and 14). Pivotally mounted in the frame structure 36 are the outwardly bent ends of a plurality of spaced links-31, inwardly turned at their other ends which are swivelly mounted upon pins 38 projecting outwardly from the lateral surfaces of the screen assembly S, said links 31 permitting and controlling the length and amplitude of the reciprocal movement of the screen assembly S during vibration thereof. Provided for shockabsorbing purposes to prevent undue vibration of the frame structure 36 is a plurality of coil springs 39 bearing at their lower ends upon the upwardly presented margins of said frame structure 36 and bearing at their upper ends against the lateral face of L-shaped brackets 40 suitably mounted upon said structure 36. Thus it will be seen that during rotation of the shaft 33, the

screen assembly S will be vibratingly actuated by rotation of the links 31.

Material failing to pass through the top deck or screen 22 is discharged upon a rearwardly and downwardly inclined vibrating tray 4| which is swingably suspended at its forward and upper -end fromlinks 42 and at its lower or discharge n end is provided with bearings 43 eccentrically Journaled upon a shaft 44 which is, in turn, operatively mounted in bearings 45 and drivingly tacle.

tuation by the auxiliary power unit 21.

4 connected by a sprocket 46 and roller chain 41 to a sprocket 48 mounted on the extended end of a horizontal tail shaft 43. The lower or discharge end 50 of the tray 4| projects over a vertical chute 5| which discharges upon a recycling conveyor illustrated as a relatively rearwardly running, upwardly inclined conveyor belt 52 which extends through the central opening of the revolving elevator l6 and carries the material deposited thereon rearwardly for ultimate discharge into a conventional type roll crusher C mounted approximately mid-way the length of the main frame I. The material so crushed thereby is deposited onto the conveyor belt l3 and thence conveyed to the revolving elevator l6 for eventual return to the vibrating screen assembly S, being then sized for passagethrough the top deck 22. Material screened through the top deck 22 and restrained upon the intermediate deck 23 will be discharged at the rearward end thereof into a chute 53 and conducted outwardly to one side of the machine A by a conveyor belt 54 for ultimate collection in any suitable recep- The material passing through the intermediate deck 23 and being restrained by the lower deck 24 is likewise discharged'into a chute 55 and carried outwardly by a conveyor belt 56 for loading into any suitable receptacle. The fine matter, such as sand, dirt, silt, and the like, passing through the lower deck or screen 24 falls through a hopper 51 (see Figure 11) mounted beneath the vibrating screen assembly S and onto a drag conveyor belt 58, fabricated preferably of rubber and having spaced cleats .59 mounted thereon. The drag 58 is of the endless belt type and extends at its rearward end about spaced drive pulleys 60 rotatably mounted upon a transversely extending shaft 6| supported by bearings 62, 63, provided outwardly of the walls of the hopper 51, said shaft 6| having mounted on one end a wheel 64 drivenly connected by a belt 65 to the shaft 33 (see Figure 11) for ac- At its forward end the drag conveyor 58 extends about a pair of spaced head pulleys 66 suitably mounted upon a shaft 67 appropriately supported in bearings 68, 59, at the forward extremity of the plant A. The lower portion of the drag conveyor 58 is disposed within a tank 10 mounted upon the frame I, and having an upwardly inclined, longitudinally extending bottom wall II. The tank 10 is located beneath the hopper 51 for receiving the wash water cascading downwardly through the screening assembly S from the spray pipes 25 and is suitably provided with conventional overflow means (not shown) V The drag conveyor 58 may be operated as a drag by rotation of the drive pulleys 60 in a counter-clockwise manner, (as indicated by the arrow on Figure 1B) whereby the sand and other fine material deposited in the tank 10 will be dragged upwardly along the bottom wall II and ultimately discharged atthe forward end of said conveyor forward end.

58. If it is desired that the material collected upon the drag conveyor 58 be maintained in a relatively dry state, the drive pulleys 50 may be rotated in the opposite direction for carrying the matter thereon forwardly along the top portion l2, 13, to the jaw crusher B and the roll crusher C, respectively.

It will be noted that the plant A thus incorporates a jaw crusher B and a roll crusher C the combination of which provides marked versatility permitting the plant A to be used with equal effectiveness for rock or gravel crushing action. The jaw crusher B and the roll crusher C both contain adjusting means so that the particular grades of crushed material desired may be conveniently supplied. It is, of course, obvious that the grizzly or coarse screen 9 and the decks or screens 22, 23, 24, of the vibrating screen assembly S may be easily replaced by corresponding members of various meshes to accomplish any desired results within reasonable limitsgj Additionally, it should be noted that the ma terial collected by the intermediate and lower decks 23, 24, of the screen assembly S maybe scrubbed by the spray of water to provide a clean product which is relatively dry since the water will drain downwardly carrying with it sand, grit, and the like into the tank 10. Also,

the vibration of the screen assembly S will cause any particles of water which tend to adhere to the material to be shaken off.

It should be understood that changes and modifications in the form, construction, arrangement, and combination of the several parts of the portable crushing plant may be made and substituted for those herein shown and described without departing from the nature and princi ple of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A crushing machine for rock, gravehand the like, comprising a vibrating screen separator, an internally pocketed approximately horizontal axis revolving drum elevator at one end "of the separator, a power conveyor extending from within said revolving conveyor to receive material therefrom to a point above the screen separator to deposit said material onto the screen separator, a crusher spaced from the separator on the opposite side of the revolving elevator therefrom, a recycling conveyor extending through the revolving elevator beneath the power conveyor from a point adjacent the overs discharge of the separator to a point above the crusher to receive maximum sized overs" from the screen and to convey them directly to the crusher.

2. A crushing machine for rock, gravel, and

the like, comprising an elongated mobile frame, a power driven coarse screen on one endportion of the frame for initial separation of raw material fed into the machine, a first adjustable crusher at one end of the coarse screen in position to receive all overs rejected by the coarse screen, a first conveyor extending lengthwise of the frame beneath the coarse screen and the first crusher, a vibrating screen separator extending lengthwise of th frame substantially at the opposite end thereof from the coarseiscreen, conveying means receiving material from the first conveyor and depositing said material onto the screen separator, a second crushefmounted on the frame intermediate the first;:conveyor and the vibrating screen, and a recycling conveyor receiving the maximum sized overs from the vibrating screen and extending'therefrom to the second crusher, whereby the conveyors do not pass continuously over the first" and second crushers, said conveying means comprising a revolving drum-type elevator and a conveyor extending therethrough to the upper end of the vibrating screen, the recycling conveyor extending from a point adjacent the lower end of the vibrating screen through the elevator to the second crusher.

HARRY J. SHELTON, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS OTHER REFERENCES Rock Products, October 1944, pages -61, article entitled One Unit Crushing and Screening Plant. 

